Cigarette lighter adapter



FIG. 1 is a top plan view of the cigarette lighter adapter showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof.

The broken lines are shown for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a cigarette lighter adapter, as shown and described. 